Chem. J. Chinese Universities ›› 2017, Vol. 38 ›› Issue (3): 448.doi: 10.7503/cjcu20160680

• Physical Chemistry • Previous Articles     Next Articles

Excited State Intramolecular Proton Transfer of Salicylaldehyde Derivatives and Its Application in Fluorescent Probe Field

LI Xueying1, CHEN Yanming1, CUI Na1, ZHANG Wanyu1, WANG Zhiming1,2,*()   

  1. 1. School of Petrochemical Engineering, Shenyang University of Technology, Liaoyang 111003, China;
    2. Shenzhen Research Institute, Hong Kong University of Science & Technology, Shenzhen 518057, China;
  • Received:2016-09-26 Online:2017-03-10 Published:2017-02-23
  • Contact: WANG Zhiming E-mail:wangzhm1983@163.com
  • Supported by:
    † Supported by the National Natural Science Foundation of China(No.51673118) and the Science and Technology Plan of Shenzhen, China(No.JCYC20160428150429072).

Abstract:

According to the electronic structure control theory, the electron withdrawing substituent was introduced to the para-positon of phenol hydroxyl group to stable the ketone conformation, and the target compound, 2-hydroxy-5-(4-cyanophenyl)-benzaldehyde(CN-SA), was prepared. Series of spectral tests show that, CN-SA not only shows the typical excited state intramolecular proton transfer(ESIPT) fluorescence characteristics, but also significantly increases the ketone distribution proportion in radiation transition process, so that the fluorescence intensity and color change visibly. CN-SA not only exhibites selective recognition for the external solvent environment, but also has specific response and quantitative analysis ability for aggregation process(aggregation effect) and the hydrogen bond formation ability following environmental changes(pH effect and anions effect). With little structure tuning, CN-SA could realize alcohol and ketone conformation distribution changes and can be used as a simple multiple stimulation-responsive fluorescence probe.

Key words: Excited state intramolecular proton transfer(ESIPT), Salicylaldehyde, Stimulation-response, Fluorescent probe, Enol-ketone switching

CLC Number: 

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